An upper level disturbance, in conjunction with a very warm, moist, and unstable airmass, caused a large outbreak of severe weather.  Associated with this event was a large squall line of strong to severe thunderstorms.  Damage was reported in portions of the Washington and Baltimore Metropolitan areas.  Strong winds also occurred on the maritime waters of the Potomac River and Chesapeake Bay.

Thunderstorm Wind in BALTIMORE CITY (C), MARYLAND
From 06-JUN-05 21:15:00 to 06-JUN-05 21:25:00 (EST)
Location: ROLAND PARK
Magnitude: 50 EG
Reported by: TRAINED SPOTTER

Powerlines downed near Johns Hopkins University.

Thunderstorm Wind in ANNE ARUNDEL, MARYLAND
From 06-JUN-05 19:00:00 to 06-JUN-05 19:00:00 (EST)
Location: SEVERNA PARK
Magnitude: 50 EG
Reported by: FIRE DEPT/RESCUE SQUAD

Tree down

Thunderstorm Wind in HARFORD, MARYLAND
From 06-JUN-05 17:50:00 to 06-JUN-05 17:55:00 (EST)
Location: BEL AIR
Magnitude: 55 EG
Reported by: GENERAL PUBLIC

Several large limbs down

Thunderstorm Wind in MONTGOMERY, MARYLAND
From 06-JUN-05 18:30:00 to 06-JUN-05 18:30:00 (EST)
Location: GERMANTOWN
Magnitude: 50 EG
Reported by: EMERGENCY MANAGER

Trees down

Thunderstorm Wind in BALTIMORE, MARYLAND
From 06-JUN-05 17:41:00 to 06-JUN-05 17:41:00 (EST)
Location: GARRISON
Magnitude: 50 EG
Reported by: EMERGENCY MANAGER

Several trees down

Lightning in HARFORD, MARYLAND
From 06-JUN-05 17:50:00 to 06-JUN-05 17:50:00 (EST)
Location: BEL AIR
Property damage: 75K
Reported by: NEWSPAPER

A house fire in the Greenridge development occurred due to frequent lightning strikes from severe thunderstorms.  A firefighter was injured during the blaze, and was taken to a local hospital.

Lightning in MONTGOMERY, MARYLAND
From 06-JUN-05 18:30:00 to 06-JUN-05 18:30:00 (EST)
Location: MONTGOMERY VLG
Property damage: 475K
Reported by: NEWSPAPER

A house fire occurred due to frequent lightning strikes from severe thunderstorms.

Hail in CHARLES, MARYLAND
From 06-JUN-05 23:15:00 to 07-JUN-05 23:20:00 (EST)
Location: LA PLATA
Magnitude: 0.88 
Reported by: EMERGENCY MANAGER

Thunderstorm Wind in PRINCE GEORGE'S, MARYLAND
From 06-JUN-05 19:40:00 to 06-JUN-05 19:40:00 (EST)
Location: OXON HILL
Magnitude: 50 EG
Reported by: DEPT OF HIGHWAYS

Trees down on Route 210

Thunderstorm Wind in HOWARD, MARYLAND
From 06-JUN-05 21:00:00 to 06-JUN-05 21:00:00 (EST)
Location: ELLICOTT CITY
Magnitude: 52 EG
Reported by: FIRE DEPT/RESCUE SQUAD

Trees and powerlines down

Thunderstorm Wind in ALLEGANY, MARYLAND
From 06-JUN-05 15:50:00 to 06-JUN-05 15:50:00 (EST)
Location: TWIGGTOWN
Magnitude: 50 EG
Property damage: 10K
Reported by: FIRE DEPT/RESCUE SQUAD

Trees down on a vehicle

Thunderstorm Wind in BALTIMORE CITY (C), MARYLAND
From 06-JUN-05 17:53:00 to 06-JUN-05 17:53:00 (EST)
Location: BALTIMORE
Magnitude: 50 EG
Reported by: EMERGENCY MANAGER

Trees down on Loch Raven Road

Thunderstorm Wind in ANNE ARUNDEL, MARYLAND
From 06-JUN-05 18:49:00 to 06-JUN-05 18:49:00 (EST)
Location: PASADENA
Magnitude: 50 EG
Reported by: FIRE DEPT/RESCUE SQUAD

Powerlines down

Thunderstorm Wind in CARROLL, MARYLAND
From 06-JUN-05 17:15:00 to 06-JUN-05 17:15:00 (EST)
Location: GAMBER
Magnitude: 50 EG
Reported by: FIRE DEPT/RESCUE SQUAD

Trees down

Thunderstorm Wind in WASHINGTON, MARYLAND
From 06-JUN-05 17:20:00 to 06-JUN-05 17:20:00 (EST)
Location: HAGERSTOWN
Magnitude: 55 EG
Reported by: FIRE DEPT/RESCUE SQUAD

Numerous trees down in Greenbrier State Park

Thunderstorm Wind in HARFORD, MARYLAND
From 06-JUN-05 17:47:00 to 06-JUN-05 17:47:00 (EST)
Location: HICKORY
Magnitude: 59 MG
Reported by: BROADCAST MEDIA

Thunderstorm Wind in CHARLES, MARYLAND
From 06-JUN-05 21:00:00 to 06-JUN-05 21:00:00 (EST)
Location: WALDORF
Magnitude: 50 EG
Reported by: EMERGENCY MANAGER

Trees down in Waldorf and White Plains

Thunderstorm Wind in BALTIMORE, MARYLAND
From 06-JUN-05 21:10:00 to 06-JUN-05 21:10:00 (EST)
Location: WOODLAWN
Magnitude: 55 EG
Reported by: UTILITY COMPANY

Six trees down

Funnel Cloud in BALTIMORE CITY (C), MARYLAND
From 06-JUN-05 17:30:00 to 06-JUN-05 17:30:00 (EST)
Location: ROLAND PARK
Reported by: TRAINED SPOTTER

A funnel cloud partially descended for less than 10 seconds.

Hail in BALTIMORE, MARYLAND
From 06-JUN-05 21:20:00 to 06-JUN-05 21:25:00 (EST)
Location: TOWSON
Magnitude: 1.00 
Reported by: TRAINED SPOTTER

Power outages occurred and small limbs were downed as well.

Thunderstorm Wind in FREDERICK, MARYLAND
From 06-JUN-05 17:15:00 to 06-JUN-05 17:15:00 (EST)
Location: FREDERICK
Magnitude: 50 EG
Reported by: FIRE DEPT/RESCUE SQUAD

Scattered trees down around the county